this is detective stern with the arson unit. we have some new information about the "incident" at your condo.
i don't know if you're aware.  your front door -- it seems someone sprayed freon into the lock, then tapped it with a chisel to shatter the cylinder.
does this sound strange to you?
the dynamite.
yes. it left a residue of ammonium oxalate and potassium perchloride. do you know what that means?
it means it was homemade.
whoever set this homemade dynamite could've blown out the pilot light days before the explosion. the gas, it seems, was just a detonator.
i'll ask the questions, son.
do you know anyone who'd have the expertise or motive to do something like this?
well, if any ideas come to you, give me a call. in the meantime, don't leave town. i may need to bring you in for questioning.